Last post on Apr 05, 2011 at 2:27 PM
You are in the Jeep Liberty and Jeep Liberty Diesel
What is this discussion about?
Jeep Liberty, Fuel Efficiency (MPG), SUV
#13 of 62 More Liberty MPG Data
Oct 09, 2006 (12:50 pm)
I've driven the same '02 Liberty Sport 4x4 w/ 3.7L engine (not mine - a family member's) on two long-distance trips. The first was a one-way from North Carolina to Maine in October '04, almost all on multi-lane interestates, typically driving with the CC set at 5-10 over the limit. My average MPG (computed the old-fashioned way) was 22.8. This past July I took a round-trip from Maine to upstate New York, about 2/3 on interstates, but a good chunk on rural state roads and some in town, 5-10 over again whenever possible. Average MPG for that trip was 19.9.
It ain't great, but it's better than the miserable mileage my on-its-last-legs '95 Trooper is getting - 16 MPG on mostly highways if I'm lucky!
#14 of 62 What Mods are good for better mileage
Oct 20, 2006 (10:19 pm)
Greetings all. Just purchased a 2003 Liberty Sport 4wd with the auto transmission. Here's my question - would anyone recommend any simple fixes or upgrades that get a decent payback with fuel economy. I've seen some refer to K&N air filters, figure the obvious stuff like putting air in tires is always good. Any suggestions on things you've done that worked out good?
#15 of 62 Re: What Mods are good for better mileage [mmontgomery]
Oct 21, 2006 (4:08 pm)
mmontgomery:How many miles does your Liberty have on it? Are you sure that the place you bought i from did a spark plug change, and air and oil filter change as well? What kind of mpg are you getting?
These things I mentioned are very basic to good mpg. However if the things above have been done, here a few things to bring out better mpg on any vehicle. Go to Synthetic 5-30w oil. Make sure the tire pressure is 33 to 36psi. Use the Cruze control as much as possible. Avoid jack rabbit starts. Don't use the defroster any longer than you have to, this uses the air conditioner to take the moisture out of the air, using fuel like in the summer. Don't let the engine warm up for long periods of time. Run some injector cleaner in your gas tank to glean out injectors and valve body. If spark plugs were changed recently, pull one out and make sure its a Champion, and gaped at the right measurement. Look under the Liberty and make sure the gas line does not have a leak of any kind. You can even make sure the transfer case lubercant has been replaced and is clean and full, the same goes for the axles as well.
My experience is when someone is trying to sell a used vehicle they make the inside and outside detailed real nice, but the upkeep items they do fool with. You can't see those items, and that's where money gets spent rather rapidly, but it's more important than making the outside and inside look brand new.
If you did everything I said the mpg that you will gain proberly won't be what you are wanting to achieve. In tip top shape expect 15 to 16mpg and on the road 17 to 19mpg
#16 of 62 Re: What Mods are good for better mileage [farout]
Oct 22, 2006 (8:21 am)
Right on Farout, but you forgot to suggest only driving to destinations that are downhill and downwind from your starting point.
#17 of 62 Re: What Mods are good for better mileage [jayrider]
Oct 22, 2006 (8:23 pm)
Actually, I filled up tonight for the first time, clocked just over 16mpg for a mix of local and over road driving. So I checked the air filter, and surprise! - filthy. Carmax says they do a multipoint service / inspection, this is something a bit obvious to have overlooked. Checked tire air, and the other stuff, and it looks fine. Will wait to see what impact a new air filter and routine driving has on me.
#18 of 62 Re: What Mods are good for better mileage [jayrider]
Oct 26, 2006 (1:50 pm)
jayrider: I just always assume those things are present. Remember the test of a real Jeep driver is to brag about how many miles you get to a gallon. Always make your mpg at least 2mpg more than the other guy.
#19 of 62 Re: What Mods are good for better mileage [mmontgomery]
Oct 26, 2006 (2:14 pm)
mmontgomery: In my 46 years of driving I have not seen fuel mileage go up very much by just changing the air filter. Yes, maybe 1/2 mpg or less, but not a big amount.
Let me show just what the difference in mpg makes. Say you are getting 16mpg. You want 19mpg, that might make you feel much better about mpg your Liberty, right? Well the truth is there is only .03 per gallon difference between 16mpg and 19mpg or .60 cents a 20 gallon tank full. But there is more to economy than just .03 cents a gallon. We got our 06 Liberty Sport for $3350. less than we could have bought a Compass equipped as close to the Liberty as possible.
The Compass 2.4 CVT II gets maybe 24 mpg. the Liberty 17mpg. At $.035 divided into $3350. = 95,714 miles before you would notice any savings in fuel compared with the Compass with the 3.7 V-6 Liberty. So just fuel mpg is not the big answer for cost per mile of driving.
Just drive like this Jeep has to last you for 10 years, and you will be far a head.
#20 of 62 Re: What Mods are good for better mileage [farout]
Oct 26, 2006 (8:02 pm)
Farout -- agree with your calcs. Filled up second time (first time after my first complete fill) and saw mileage improve by 1.5mpg -- makes me think they don't exactly top off the tank totally. Did get Carmax to change the filter, although that was half way through the tank -- doubtful that was it.
I do think I'd much rather have the Liberty than the Compass, though. Nicer handling, feels far more solid. The commute isn't all that bad for me, most of it is freeway and the car it's replacing - a 98 ford ranger - got about the same mileage.
Thanks for all the comments, guys!
#21 of 62 Re: What Mods are good for better mileage [farout]
Oct 27, 2006 (8:38 am)
Yeah-yeah Farout, but just think of the bragging rights you would have accrued after those 95,714 miles passed beneath the Compasses' leaking oil pan. Not to mention the lifestyle changes brought about by the new found riches accumulating every time you fill'er up.
#22 of 62 Biggest lie in print for MPG of Liberty
Oct 27, 2006 (6:07 pm)
We all have seen these down right lies about what great gas mileage the Liberty gets in the News Paper adds especially in the Sunday paper. I saw a Ford dealer add for a used 2004 Liberty for a 3.7 gas, saying "Great on gas 30 mpg!" The same dealer had an add saying the Escape had a V-8. Must be a new sales person?